REPLICAST 616 Metallic Gray Rapid Tooling Urethane
DESCRIPTION
REPLICAST
616 is a two-component, filled urethane tooling material that has very
easy handling characteristics and exceptional cured properties. This
material tends to have less hard-pack settling in storage, and therefore
is usually easier to use than other materials of this type, which tend
to settle more rapidly. It is not extremely abrasive, so it can be
machined with the proper cutters if desired. REPLICAST 616 has a
one-to-one mix ratio by weight or volume, for fast measuring and mixing.
It has a shorter pot life than the REPLICAST 612 product, and therefore
cures more rapidly. It can be demolded and put into service rather
quickly, making it the better choice for thinner castings and when a
faster cure time is required. REPLICAST 616 provides an easy to measure
and mix, rapid curing system that has tough cured properties and very
good heat resistance. It is an excellent choice for patterns, tooling,
fixtures and general shop aids
REPLICAST 616 offers the following benefits:
– Less hard-pack filler settling
– Low exotherm during cure for stress-free castings
– Smooth consistency that pours well & duplicates details nicely
– Very good hot strength
– Excellent for smaller to medium size castings
– Low shrinkage, good cured stability
HANDLING & CURING
REPLICAST 616 is a modification of the REPLICAST 612 product that
has provided excellent service for a number of years. REPLICAST 616 has
been developed to provide a shorter working time to allow faster
production of smaller to medium size castings. With the faster setting
time, it cures quite rapidly in thinner sections than REPLICAST 612 was
designed for, so it can be demolded in a short time in those instances.
The exact demold time will depend upon the shop conditions and size of
the casting. Generally, most castings can be demolded in 30 to 40
minutes, depending upon size, and can be put into service shortly after
that. Extremely thin casts, and those made in very cold shop
environments should be carefully checked for hardness and degree of cure
before demolding, to avoid distortion of the casting. REPLICAST 616 is a
highly filled system, and, as such, both components should be checked
for settling before making a casting. REPLICAST 616 usually has less
hard-pack settling than other products of this type. However, all filled
casting systems have the potential to settle in some manner when stored
for long periods, so the REPLICAST resin and hardener should be
thoroughly stirred before use to insure original manufactured
uniformity.
TYPICAL MECHANICAL PROPERTIES
| REPLICAST 616 A/B | ASTM Method | |
| Mix Ratio, by Weight | 100 : 100 | PTM&W |
| Color | Metallic Gray | Visual |
| Mixed Viscosity, @ 77°F | 2600 cps | D2393 |
| Working Time, 4 fl. oz. Mass @ 77°F | 6 min. | D2471 |
| Peak Exotherm, 20 lb. Mass. Cast 2 ½” Thick | 124°F | D2471 |
| Cured Hardness, @ RT, @ 150°F | 84 D, 80 D | D638 |
| Shrinkage, in./in., Mold # 3, Vol: 1.23 Gal 10″ Long x 4.5 ” Deep | .0009 | D2566 |
| Specific Gravity, grams, cc | 1.71 | D1475 |
| Density, lb./cu. inch | .0618 | D792 |
| Specific Volume, cu. in./lb. | 16.19 | D792 |
| Tensile Strength, psi | 4500 psi | D638 |
| Elongation @ Break, % | 2.00 % | D638 |
| Flexural Strength, psi | 6900 psi | D790 |
| Compressive Strength, psi | 9100 psi | D695 |
PACKAGING INFORMATION
| REPLICAST 616 | Gallon Kit | Kit Volume | |
| Gallons | Cubic Inches | ||
| Part A | 9 lb. | .62 | 144 |
| Part B | 9 lb. | .64 | 147 |
| Kit | 18 lb. | 1.26 | 291 |